The search service can find package by either name (apache),
provides(webserver), absolute file names (/usr/bin/apache),
binaries (gprof) or shared libraries (libXm.so.2) in
standard path. It does not support multiple arguments yet...

The System and Arch are optional added filters, for example
System could be "redhat", "redhat-7.2", "mandrake" or "gnome",
Arch could be "i386" or "src", etc. depending on your system.

System
Arch

RPM resource ddclient

DDclient is a small full featured client requiring only Perl and no
additional modules. It runs under most UNIX OSes and has been tested
under Linux and FreeBSD. Supported features include: operating as a
daemon, manual and automatic updates, static and dynamic updates,
optimized updates for multiple addresses, MX, wildcards, abuse
avoidance, retrying failed updates, and sending update status to
syslog and through e-mail. This release may now obtain your IP address
from any interface, web based IP detection, Watchguard's SOHO router,
Netopia's R910 router, SMC's Barricade broadband router, Netgear's
RT3xx router, Linksys' broadband routers, MaxGate's UGATE-3x00
routers, ELSA's LANCOM DSL/10 routers, Cisco's 2610, 3com 3c886a 56k
Lan Modem, SOHOWare BroadGuard NBG800, almost every other router with
user configurable FW definitions (see the sample-etc_ddclient.conf)
and now provides Full support for DynDNS.org's NIC2 protocol. Support
is also included for other dynamic DNS services. Comes with sample
scripts for use with DHCP, PPP, and cron. See the README for more
information.